关于Mg在Bunsen burner火中的反应如果把一小条Mg放在Bunsen　burner火焰中,Mg会产生耀眼的白色光芒.Mg是和什么物质产生反应的?是Bunsen　burner里碳氢化合物（CH4）和氧产生的二氧化碳(CO2)还是氧气(O

关于Mg在Bunsen burner火中的反应如果把一小条Mg放在Bunsen　burner火焰中,Mg会产生耀眼的白色光芒.Mg是和什么物质产生反应的?是Bunsen　burner里碳氢化合物（CH4）和氧产生的二氧化碳(CO2)还是氧气(O 3.The Bunsen Burner is so named because it is thought ___________ by Robert Bunsen. 请问本句中is so named是什么意思?The Bunsen Burner is so named because it is thought to have been invented by Robert Bunsen.这句话里is so named是什么意思?是很出名的意思吗? 改错The Bunsen burner is so named because it is thought to be invented bu Robert Bunsen,who was GerThe Bunsen burner is so named because it is thought to be invented bu Robert Bunsen,who was German by birth. the bunsen burner is so named because it is thought----by robert bunsen,who was german by birthhaving been invented to have been invented 为什么用不定式形式?不定式不是表示一次性或目的吗? 过去分词作宾补的The Bunsen burner is so named because it is thought ______ by Robert Bunsen.A invitedB to have been invited我想知道B怎么错?B是不定式完成被动式,也表示被动,也表示完成啊,这种情况下如何判断不 X BURNER 关于化学ppm计算在浓度为250ug/L Mg(NO3)2中,Mg的浓度是多少?A1.686ppbB1.686mg/LC40.96ppbD40.96mg/L mg在空气中燃烧化学方程式是什么 mg在co2中燃烧反应方程式 Mg在二氧化碳中燃烧的化学方程式 Mg在N2中燃烧反应方程式 mg在co2中可燃烧么? Mg能在氯气中燃烧么 Mg在N2中燃烧反应热方程式 为什么Mg能在CO2中燃烧? Mg为什么能在CO2中燃烧 burner blocks中文翻译